/*
 * Copyright 2011 The Rusted Roof, LLC.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package org.proteusframework.platformservice.persistence.c14n;

import java.io.*;
import java.util.ArrayList;
import java.util.List;

/**
 * @author Tacoma Four
 */
final class StringArrayC14NHandler extends AbstractC14NHandler
{
    @Override
    public Object fromC14N(byte[] bytes)
    {
        List<String> stringList = new ArrayList<String>();
        DataInputStream stringDis = new DataInputStream(new ByteArrayInputStream(bytes));

        try
        {
            while (true)
            {
                stringList.add(stringDis.readUTF());
            }
        } catch (EOFException ignore)
        {

        } catch (IOException e)
        {
            e.printStackTrace();
        }

        String[] stringValues = new String[stringList.size()];
        return stringList.toArray(stringValues);
    }

    @Override
    public byte[] toC14N(Object object)
    {
        byte[] stringBytes = new byte[0];

        String[] stringValues = (String[]) object;
        ByteArrayOutputStream stringBaos = new ByteArrayOutputStream();
        DataOutputStream stringDos = new DataOutputStream(stringBaos);

        String stringHeader = PACKED_BLOB_PREFIX + transposeClassName(String[].class.getName()) + PACKED_BLOB_SUFFIX;
        byte[] stringHeaderBytes = stringHeader.getBytes();
        try
        {
            stringDos.write(stringHeaderBytes, 0, stringHeaderBytes.length);
            for (String curValue : stringValues)
            {
                stringDos.writeUTF(curValue);
            }

            stringDos.flush();
            stringDos.close();

            stringBytes = stringBaos.toByteArray();
        } catch (IOException e)
        {
            e.printStackTrace();
        }

        return stringBytes;
    }
}
